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F.H. Furr's Plumbing, Heating, Cooling & Electrical Insider Blog

Keep Warm This Winter With A Gas Furnace!

Is there anything more comforting on a harsh cold day than your warm, cozy home? Heating is important not only for the comfort of you and your family but also for your home’s energy-efficiency and protection.

chantilly va gas furnace replacementAs a homeowner, you should have peace of mind knowing that your furnace is running as smoothly and efficiently as possible. Having a well maintained system also results in preventing costly furnace repair.

With a cost-effective and dependable gas furnace, you can rest-assured that your energy bills will be much lower and your heating system will require much less maintenance or repair. Your system will keep your home at the climate that is most comfortable for you and your family, so set your thermostat, and enjoy.

How Does A Gas Furnace Work?

A gas furnace uses combustion gases such as propane or natural gas. These gases are ignited by the burners and passed through the heat exchanger. The furnace fan blows the air from your home across the heat exchanger to be warmed. Then, the warm air is blown into your duct system to be distributed around your home.

Gas and Furnace Heating System Terms

  • Understanding 80% and 90%-95% Efficiency Units:  In an 80% efficient system, gasses are hot enough that they need to vent conventionally into the chimney stack. In a 90%-95% efficient system, the gasses are much cooler and vent to the outside via an exhaust vent, much like a clothes dryer.
  • AFUE (Annual Fuel Utilization Efficiency):  Indicated as a percentage, your furnace’s AFUE tells you how much energy is being converted to heat. For example, an AFUE of 90 means that 90% of the fuel is being used to warm your home, while the other 10% escapes as exhaust with the combustion gasses.
  • Combustion Air:  Combustion air is the air required to properly burn the gas for your heating system to get maximum capacity.
  • Heat Exchanger:  This is the part of a furnace that transfers heat to nearby air; the chamber where fossil fuel is burned. An improperly sized heater will cause expansion and contraction of the heat exchanger, which will lead to premature aging and cracks.
  • Venting Types:  Your new gas heater will vent the combustible gasses in one of two ways – via a direct vent system or into an existing chimney. In most cases, the chimney will need to be relined in order to generate the correct draft.
  • Single-Stage Gas Valve:  Single Stage Gas Valves operate on a basic on/off principle. Each time your themostat calls for heat, your heating system comes on at 100% capacity.
  • Two-Stage Gas Valves:  Two-Stage Gas Valves are capable of two levels of operation — a low stage and a high stage. Properly sized equipment will operate 60-70% of the time in low stage, enhancing energy efficiency and comfort with perfect humidity levels and quieter operation. It’s like getting two heaters in one.
  • Standard Blower:  A standard blower delivers a specified amount of air flow based on a tap setting.
  • Variable-Speed Blower:  This high-efficiency blower is designed to deliver a varying amount of air flow based on the desired outcome. These blowers increase the effectiveness of humidification, dehumidification, air filtration and balance of air flow.

Ready to Install/Replace or Repair Your Home Comfort System?

Let our friendly and experienced team of Comfort Consultants give you a free Home Comfort System Analysis which can include furnace diagnostics and repair assessment. They’ll study and discuss any concerns/problems that you may have with your current comfort system. They’ll review all system recommendation options and help you with finding the best home comfort system that meets all your family’s needs and budget.  They will also assess and recommend any furnace repair that might be required.


Topics: Household Tips furnace HVAC